i am probably ordering an autocal from ATP next week. i am hoping to clear up some questions about the turbo brake. I assume it comes on as soon as you let out of the throttle?? Does that ever get aggrevating? seems like it would... my camper is only about 7k so i dont really NEED it but it would be nice to save the brakes if i can, but on the other hand i seem to do alot of coasting also...